Approximately what percentage of the cases represented by the normal curve fall between -1 and +1 standard deviations from the mean?
A) 16
B) 34
C) 68
D) 95

Question

Quizplus · Accepted Answer

The empirical rule (also known as the 68-95-99.7 rule) states that approximately 68% of the data falls within one standard deviation of the mean in a normal distribution. Therefore, the correct answer is C (68%).

Approximately What Percentage of the Cases Represented by the Normal